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process_ctrl code refine

pull/10/head
Yu Qing 2016-11-12 11:23:44 +08:00
parent cb3dc49e2a
commit b53a158f67
1 changed files with 10 additions and 3 deletions
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13
src/process_ctrl.c
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@ -50,6 +50,8 @@ int delete_pid_file(const char *pidFilename)
} }
if (pid != getpid()) { if (pid != getpid()) {
fprintf(stderr, "pid file: %s not mine, pid: %d != mine: %d",
pidFilename, (int)pid, (int)getpid());
return ESRCH; return ESRCH;
} }
@ -57,6 +59,9 @@ int delete_pid_file(const char *pidFilename)
return 0; return 0;
} }
else { else {
fprintf(stderr, "unlink file: %s fail, "
"errno: %d, error info: %s!\n",
pidFilename, errno, strerror(errno));
return errno != 0 ? errno : ENOENT; return errno != 0 ? errno : ENOENT;
} }
} }
@ -159,13 +164,15 @@ int process_start(const char* pidFilename)
cmdline[cmdsz-1] = argv0[cmdsz-1] = '\0'; cmdline[cmdsz-1] = argv0[cmdsz-1] = '\0';
sprintf(cmdfile, "/proc/%d/cmdline", pid); sprintf(cmdfile, "/proc/%d/cmdline", pid);
if ((result=getFileContentEx(cmdfile, cmdline, 0, &cmdsz)) != 0) { if ((result=getFileContentEx(cmdfile, cmdline, 0, &cmdsz)) != 0) {
fprintf(stderr, "read file %s failed. %d %s\n", cmdfile, errno, strerror(errno)); fprintf(stderr, "read file %s failed. %d %s\n",
cmdfile, errno, strerror(errno));
return result; return result;
} }
cmdsz = sizeof(argv0); cmdsz = sizeof(argv0);
sprintf(cmdfile, "/proc/%d/cmdline", getpid()); sprintf(cmdfile, "/proc/%d/cmdline", getpid());
if ((result=getFileContentEx(cmdfile, argv0, 0, &cmdsz)) != 0) { if ((result=getFileContentEx(cmdfile, argv0, 0, &cmdsz)) != 0) {
fprintf(stderr, "read file %s failed. %d %s\n", cmdfile, errno, strerror(errno)); fprintf(stderr, "read file %s failed. %d %s\n",
cmdfile, errno, strerror(errno));
return result; return result;
} }
if (strcmp(cmdline, argv0) == 0) { if (strcmp(cmdline, argv0) == 0) {
@ -177,7 +184,7 @@ int process_start(const char* pidFilename)
return 0; return 0;
} }
else { else {
result = errno; result = errno != 0 ? errno : EPERM;
fprintf(stderr, "kill pid: %d fail, errno: %d, error info: %s\n", fprintf(stderr, "kill pid: %d fail, errno: %d, error info: %s\n",
(int)pid, errno, strerror(errno)); (int)pid, errno, strerror(errno));
return result; return result;